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Use the quotient rule to expand [tex]\log _9\left(\frac{2y-9}{y}\right)[/tex].

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Sagot :

Certainly! Let's go step-by-step to expand [tex]\(\log_9\left(\frac{2y-9}{y}\right)\)[/tex] using the quotient rule for logarithms.

### Step-by-Step Solution:

1. Identify the Quotient Rule:
The quotient rule for logarithms states that:
[tex]\[ \log_b\left(\frac{A}{B}\right) = \log_b(A) - \log_b(B) \][/tex]
Here, [tex]\(A\)[/tex] is the numerator and [tex]\(B\)[/tex] is the denominator in the argument of the logarithm.

2. Apply the Quotient Rule:
In our problem, the expression inside the logarithm is [tex]\(\frac{2y-9}{y}\)[/tex]. So, we can identify [tex]\(A\)[/tex] as [tex]\(2y - 9\)[/tex] and [tex]\(B\)[/tex] as [tex]\(y\)[/tex].

According to the quotient rule:

[tex]\[ \log_9\left(\frac{2y-9}{y}\right) = \log_9(2y-9) - \log_9(y) \][/tex]

3. Write the Expanded Form:
Now, substituting [tex]\(A\)[/tex] and [tex]\(B\)[/tex] into the quotient rule, we get:

[tex]\[ \log_9(2y-9) - \log_9(y) \][/tex]

### Final Answer:
The expanded form of [tex]\(\log_9\left(\frac{2y-9}{y}\right)\)[/tex] using the quotient rule is:
[tex]\[ \log_9(2y-9) - \log_9(y) \][/tex]

This completes the expansion using the quotient rule for logarithms.